Sakhob Khumkoa. 1997. Hot ductility of cold work tool steel grades AISI L3 and O1. Graduate School, Chulalongkorn University;
Sakhob Khumkoa. (1997) Hot ductility of cold work tool steel grades AISI L3 and O1 . Chulalongkorn University/Bangkok.
Sakhob Khumkoa. Hot ductility of cold work tool steel grades AISI L3 and O1. . Bangkok:Chulalongkorn University, 1997.
Sakhob Khumkoa. (1997) Hot ductility of cold work tool steel grades AISI L3 and O1 . Chulalongkorn University/Bangkok.